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116 api developer integration engineer jobs at 83 companies in Fontana, CA

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Payload Integration Engineer - Level 4
Pasadena, California, United States
$127k-$193k/yr HybridFull Time
Sophia Space
Sophia Space: Modular data center hardware for in-orbit computing and AI.
8+ YOEBS in engineering, 8+ years spacecraft or payload systems engineering experience, ownership of payload integration/ICDs/I&T, electro-optical payload expertise, API/SDK integration experience, strong cross-disciplinary leadership; U.S. Person required.
SpaceWire, GigE Vision, MIPI CSI, RS-422, CAN, Ethernet, MIL-STD-1553, CCSDS, MBSE, SysML, DOORS, Jama, Polarion, Cameo, Innoslate, MGSE, EGSE, APIs, SDKs
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3w
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Senior Integration Engineer - Tokenization
United States or Los Angeles or Seattle or San Francisco or New York City
$113k-$153k/yr RemoteFull Time
Marqeta
MarqetaNASDAQ: MQ: Providing cloud-based card issuing and payment processing infrastructure.
5+ YOE5+ years advising enterprise customers on technical integrations, strong API knowledge, experience with Postman or Bruno, SQL and Datadog a plus, bachelor’s degree preferred.
Bruno, Postman, SQL, Datadog
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1w
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Integration Engineer
Irvine, California, United States
$110k-$140k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
8+ YOEStrong experience with Java, Apache Kafka, real-time streaming, event-driven architectures, API integrations, microservices; 8+ years experience preferred.
Java, Apache Kafka, Kafka Streams, Kafka Connect, Spring Boot, Spring Cloud, Spark Streaming, REST APIs, JSON, XML, Git, Jenkins, CI/CD, Docker, Kubernetes, OpenShift, SQL, NoSQL Databases, AWS, Azure, Splunk, Grafana, ELK, Prometheus
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Sr. Integration Engineer
Irvine, California, United States
$132k-$205k/yr HybridFull Time
Hyundai Capital
Hyundai Capital: Provides automotive financing and insurance services for vehicle customers.
8+ YOE8+ years enterprise integration experience with MuleSoft, TIBCO, Informatica; API-led design, DataWeave, REST APIs, cloud (AWS) experience; code reviews, CI/CD, and bachelor's degree in a related field.
MuleSoft, TIBCO, Informatica, MuleSoft Anypoint Platform, DataWeave, REST APIs, AWS, CI/CD
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Sr. Integration Engineer
Irvine, California, United States
$132k-$205k/yr HybridFull Time
Hyundai Capital
Hyundai Capital: Provides automotive financing and leasing for Hyundai Motor Group.
8+ YOE8+ years enterprise integration experience with MuleSoft, TIBCO, and Informatica; API-led design, DataWeave, REST APIs, cloud (AWS) experience, CI/CD and code-review skills; bachelor's degree in CS/IT or related.
MuleSoft, MuleSoft Anypoint Platform, TIBCO BusinessWorks, DataWeave, REST APIs, Informatica, AWS
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3w
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Integration Engineer - High Voltage Los Angeles, CA
Los Angeles, California, United States
$110k-$145k/yr OnsiteFull Time
Volkswagen Group
Volkswagen GroupFrankfurt Stock Exchange: VOW3: Global manufacturer of motor vehicles and automotive financial service provider.
5+ YOE5+ years validation/integration experience for connected infotainment, VWAG vehicle integration knowledge, engineering degree, strong communication, test and resource management, knowledge of CAN/MOST/Ethernet/FlexRay.
CAN, MOST, Ethernet, FlexRay, APIs, MQTT, Cloud Infrastructure
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Application Integration Engineer
Irvine or Palo Alto
$95k-$115k/yr OnsiteFull Time
Rivian
RivianNASDAQ: RIVN: Designs and manufactures electric vehicles and charging networks.
1+ YOEExperience with AWS services, middleware (Boomi/MuleSoft/Workato), Java/Python/Node.js, microservices and API design, ETL, industry protocols, Airflow/Step Functions, GitLab, and strong communication skills.
S3, Lambda, Glue, EKS, API Gateway, EC2, Kafka, Dell Boomi, Workato, Mulesoft, Java, Python, Node.js, REST, SFTP, HTTPS, SMTP, Amazon Bedrock, OpenAI, Airflow, AWS Step Functions, GitLab, CloudFormation, Terraform, Terragrunt
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2mo
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Data Integration Engineer
Rancho Cucamonga, California, United States
$104k-$151k/yr OnsiteFull Time
Citizens Business Bank
Citizens Business BankNASDAQ: CVBF: Commercial banking and financial services for businesses and professionals.
3+ YOEBachelor’s degree and 3–5 years in data integration, ETL/BI, and cloud platforms.
Microsoft Fabric, Microsoft Azure, Power Platform, Power BI, Power Automate, Power Apps, Dataverse, SSIS, SQL Server, SSRS, PowerShell, Python, VB/C# .NET, APIs, Copilot Studio
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Software Integration Test Engineer -SCADA
Irvine or Houston
$65k-$105k/yr HybridFull Time
ETAP
ETAP: Electrical power system modeling and analysis software solutions.
2+ YOE2+ years testing software integrations or enterprise/industrial applications; REST API and OPC UA familiarity; basic power systems understanding; strong troubleshooting and communication; U.S. work authorization required.
Postman, Swagger, Insomnia, OPC UA, Wireshark, Fiddler, JSON, XML, SQL, Python, PowerShell, Jira, REST APIs, OAuth
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Sr HRIS Integration Engineer
Long Beach, California, United States
$131k-$181k/yr OnsiteFull Time
Relativity Space
Relativity Space: Designing and manufacturing 3D-printed rockets and launch vehicles.
5+ YOE5+ years Workday experience with HCM/payroll/time architecture, hands-on cross-system integrations (Workday Studio, APIs), Workday configuration and security expertise, strong communication skills.
Workday, Workday Studio, Core Connectors, EIBs, Greenhouse, System APIs, Reporting Infrastructure
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2w
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Enterprise Architect Integration Engineer II
Los Angeles, California, United States
$105k-$174k/yr OnsiteFull Time
L.A. Care Health Plan
L.A. Care Health Plan: Public health plan providing coverage to Los Angeles residents.
5+ YOE5+ years designing and implementing data applications and integrations; experience with APIs, SOA, messaging, cloud, databases, and healthcare interoperability standards; bachelor\u0002s degree required.
Java, JSP, Oracle PL/SQL, SQL Server, SOAP, REST, Microservices, Informatica IDMC, IICS, Oracle SOA Suite, BPEL, Oracle Service Bus (OSB), JMS, Git, HL7, FHIR, X12 EDI, Kafka, Pub/Sub, AWS API Gateway, NoSQL, Snowflake, Redshift, Databricks, OAuth 2.0, JWT, Swagger, OpenAPI, Jenkins, Azure DevOps, GitHub Actions
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Senior Software Engineer - Integrations
New York City or San Francisco or Los Angeles
$180k-$210k/yr HybridFull Time
Pivotal Health
Pivotal Health: AI platform automating healthcare insurance claim disputes for providers.
5+ YOE5+ years backend software engineering experience; strong system design, data modeling, API development, and integrations experience. Comfortable with messy healthcare data and stakeholder collaboration. Python and healthcare integrations experience preferred.
SFTP, EDI, HL7, FHIR, ICD-10, CPT, Epic, Cerner, Python, APIs
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3mo
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Backend Engineer - PCB CAD Integration
Los Angeles, California, United States
$150k-$160k/yr RemoteFull Time
Quilter
Quilter: Automates printed circuit board layout using physics-driven AI.
3+ YOE3+ years backend software experience; expert Python; strong API design and distributed systems; leadership and collaboration; startup environment adaptability.
Python, Backend frameworks, AWS, Docker, Kubernetes, Terraform, JSON, XML, protobuf
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1mo
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Senior Platform Engineer, AI
Denver or Long Beach
$170k-$275k/yr HybridFull Time
True Anomaly
True Anomaly: Develops autonomous spacecraft and software for space security missions.
5+ YOE5+ years software/cloud/DevOps experience; production development in Python/TypeScript/Java; experience with LLM APIs, prompt engineering, RAG, agent frameworks, API integrations; ability to obtain Top-Secret clearance and U.S. citizenship or equivalent status.
Python, TypeScript, Java, CrewAI, Pydantic AI, API, webhooks, MCP, Retrieval-Augmented Generation (RAG), AWS, Azure, GCP, AWS GovCloud, Azure Government, FedRAMP, NIST 800-53, IL4, IL5
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Software Engineer 2 - Salesforce Developer
Brea or Minneapolis or Cincinnati
$111k-$131k/yr HybridFull Time
U.S. Bank
U.S. BankNYSE: USB: Provider of personal, business, and institutional financial services.
3+ YOEBachelor's degree or equivalent experience, 3+ years relevant experience, strong Salesforce platform skills (Apex, Visualforce, Lightning), API integration experience, agile/DevOps familiarity, full‑stack development and code quality focus.
Salesforce, Apex, Visualforce, Lightning Component Framework, APIs, web services
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3w
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Senior Salesforce Developer
Waltham or Rancho Dominguez or Bridgewater
$130k-$170k/yr OnsiteFull Time
Repligen
RepligenNASDAQ: RGEN: Develops and manufactures bioprocessing technologies for pharmaceutical drug production.
7+ YOEBachelor's in a technical field,7+ years Salesforce development experience,Platform Developer I required; expertise in Apex,LWC,Visualforce,SOQL/SOSL,APIs and integrations; strong security, data modeling, and agile experience.
Salesforce, Sales Cloud, Service Cloud, Experience Cloud, Data Cloud, Salesforce CPQ, Apex, Lightning Web Components (LWC), Visualforce, SOQL, SOSL, APIs, REST, SOAP, KBMax, Xactly, SAP, Einstein, Agentforce, Agile, Scrum
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2mo
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Salesforce Developer
Los Angeles or San Francisco
$105k-$115k/yr HybridFull Time
Brilliant Corners
Brilliant Corners: Provides supportive housing and clinical services to vulnerable populations.
3+ YOE3+ years Salesforce development: Apex, LWC, Experience Cloud, API integrations (REST/SOAP), FormAssembly, CI/CD, Git; Platform Developer certification preferred.
Apex, SOQL, SOSL, Visualforce, Lightning Web Components (LWC), Aura Components, REST, SOAP, OAuth 2.0, JWT, Named Credentials, Platform Events, FormAssembly, JavaScript, HTML, CSS, Python, Java, C#, Salesforce DX (SFDX), CLI, change sets, GitHub Actions, Copado, Gearset, Jenkins, ANT, Git, GitHub, Microsoft Word, Microsoft Excel, Microsoft Outlook, PMD, Apex PMD, ESLint, MuleSoft, Workato, Boomi, Zapier, Experience Cloud, Salesforce Connect, Omni-Channel flow
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Forward Deployed Engineer
New York City or San Francisco or Los Angeles County or California or United States
$162k-$219k/yr HybridFull Time
Hatch
HatchNYSE: YELP: AI-powered customer engagement platform for home service businesses
1+ YOEHands-on engineer building n8n flows, direct API integrations, webhooks, and middleware; client-facing consulting; 1+ years software engineering experience (consulting preferred); strong communication and technical documentation skills.
n8n, API, webhook, CRM
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2mo
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Software Engineer, Tech Ops
Santa Monica or Los Angeles or United States
$135k-$167k/yr HybridFull Time
ZipRecruiter
ZipRecruiterNYSE: ZIP: Online employment marketplace connecting job seekers and employers.
2+ YOE2+ years software engineering or systems integration experience; proficiency in TypeScript and/or Python; API and third-party integration experience; experience using AI developer tools (Cursor, Copilot, Claude).
TypeScript, Python, Cursor, Copilot, Claude, NetSuite, Okta, ADP, Google, Salesforce
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Information Systems Developer
Irvine, California, United States
$90k/yr OnsiteFull Time
Cityside Fiber
Cityside Fiber: Provides high-speed fiber-optic internet to Southern California communities.
3+ YOEBachelor's degree or equivalent experience, 3+ years in software development or systems integration, programming experience, APIs, workflow automation, relational databases, and strong analytical and communication skills.
SQL, JavaScript, Python, Microsoft Power Automate, APIs, HRIS, CRM, relational databases
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